Home » Allan Block
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Large Tiered Walls, Christ Hospital, Cincinnati
This 60-foot grade change was achieved using tiered walls and slopes. Maximum geogrid length was 50 feet long. Deep undercuts to shale and limestone bedrock were required to achieve global stability.
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Retaining Walls Supported in Sliding Soils – How to Prevent a Failure
Global Stability includes the stability of the soils BELOW the retaining wall. If the foundation soils are sliding on a sloping surface of bedrock, then the retaining wall could begin to slide downhill! This 2-minute video shows two ways to prevent this type of global stability failure. Joseph Kowalski, P.E. www.RetainingWallExpert.com Current State PE Registrations
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Allan Block Retaining Wall With Geogrid
This is a really good video. It hits all the main points in under 4 minutes. I frequently recommend this video to wall contractors (even experienced ones) and to homeowners, as well.
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Allan Block Retaining Wall 90 Degree Bend
This short video clearly shows how to saw-cut an Allan Block to make a 90-degree bend. The block requires cutting so that it will fit perfectly when using the 6- or 9-degree batter blocks. This is a MUST SEE video if you build Allan Block retaining walls or sell them. Joseph Kowalski, P.E. www.RetainingWallExpert.com Current State PE Registrations
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Retaining Wall Base Course Installation
To have a level, attractive, well-built MSE wall (block retaining wall) the first course of wall blocks MUST be perfect. The first course must be straight and level, both side-to-side and front-to-back. Any errors in the base course become amplified as the wall is built up. For the leveling course, you need to use a well graded stone that is compacted in place. After compaction, each block should be carefully installed making sure that it is level and it is […]